http://jshd.pubs.asha.org/article.aspx?articleid=1747543The Modification of Velar MovementThe use of displacement transducers and certain procedures for training in an initial attempt to increase soft palate movement in a person with velopharyngeal inadequacy is described. An intraoral appliance with associated instrumentation for monitoring velar movement during speech is also described. Systematic training procedures using the visual feedback of ...1973-08-01T00:00:00ForumKarlind T. Moller

The use of displacement transducers and certain procedures for training in an initial attempt to increase soft palate movement in a person with velopharyngeal inadequacy is described. An intraoral appliance with associated instrumentation for monitoring velar movement during speech is also described. Systematic training procedures using the visual feedback of velar movement offered by the transducer appliance were carried out over a period of approximately three months. Baseline elevation and elevation under visual feedback only were determined initially. Conditioning sessions followed during which the subject received points or reinforcement each time he achieved a predetermined criterion of velar elevation. Radiographs were taken before and after the study. Velar elevation was modified, but other structural changes negated any changes in velopharyngeal gap or the perceptual characteristics of speech. Problems encountered in instrumentation and procedure are reported.

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